$ git clone -n https://src.fedoraproject.org/rpms/perl-Test-Deep-JSON.git /var/lib/mock/f39-build-1573145-37801/root/chroot_tmpdir/scmroot/perl-Test-Deep-JSON
Cloning into '/var/lib/mock/f39-build-1573145-37801/root/chroot_tmpdir/scmroot/perl-Test-Deep-JSON'...
$ git fetch origin bfdb8bb33486323f6e29d3b03d06b6f0504a86cd:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/perl-Test-Deep-JSON
 * [new ref]         bfdb8bb33486323f6e29d3b03d06b6f0504a86cd -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at bfdb8bb Rebuilt for https://fedoraproject.org/wiki/Fedora_39_Mass_Rebuild